Guest Stars Damien Molony as Jon Nina Toussaint-White as Lucy Caroline Ginty as Caroline Dustin Demri-Burns as Simon Karl Theobald as Therapist Clare Wille as Jane Rosa-Marie Lewis as Office Lady Ben Clark as Steven Rachel Stubbings as Child's Mum Catriona Knox as Amy Paul Longley as Office Guy Ciaran Dowd as Ian Ava Hammatt as Little Girl Jake Stacey as Little Boy